Are these Omega parts genuine

Hello,

I'm trying to restore my late dad's Omega watch with a reference 166.0209 and a caliber 1022 however, the case is gold plated and is in a bad condition, I came across this ebay listing for a similar case but I'm not sure if it is an oem part or not so any help will be highly appreciated.

Thanks

Anyone?

No way of telling from pictues.

You can have the existing case repaired and replated. Depends on where you are to receive a recommendation.

It's generally best to find a watchmaker who can advise you before you grab random parts online.